CAJ | 학술논문

采用金刚石压砧高压装置(DAC)，对层状钙钛矿结构锰氧化物Ca3Mn2O7 的粉末样品进行了高压能散X射线衍射实验。实验结果表明，在0～35GPa压力范围内，Ca3 Mn2O7晶体结构发生了两次相变。在1.3GPa左右，由原来的四方相转变为正交相；在9 .5GPa左右，又由正交相向新的四方相转变。
채용금강석압침고압장치(DAC)，대층상개태광결구맹양화물Ca3Mn2O7 적분말양품진행료고압능산X사선연사실험。실험결과표명，재0～35GPa압력범위내，Ca3 Mn2O7정체결구발생료량차상변。재1.3GPa좌우，유원래적사방상전변위정교상；재9 .5GPa좌우，우유정교상향신적사방상전변。
In suit energy dispersive X-ray diffraction measurements on l ayered perovskite-like manganates Ca3Mn2O7 under pressure up to 35GPa wer e performed by using diamond anvil cell with synchrotron radiation.The results s how that two phase transitions occured in layered perovskite-like manganates Ca 3Mn2O7 under pressures in the range of 0～35GPa.The crystal structure chan ges from tetragonal to orthorhombic at about 1.3GPa,and then from orthorhombic t o tetragonal at about 9.5GPa,respectively.